Water-jacket.



H. RUDE.

WATER JACKET.

APPLICATION FILED MAY14,1915.

QWHu L 1 III/II II/IIII/II/III)YIIIIIIIII [III/IA'IIIII/IIIIIIIIIIIIIIIIII IIIII IIIIIIIIIIII'IIIIIIIIIIII g S I I HENRYRUDE, OF WEST ALLIS, WISCONSIN, ASSIGNOR TO ALLIS-CHALMERS MANU-FACTURING COMPANY, OF MILWAUKEE, WISCONSIN, A CORPORATION OF DELA- WARE.

WATER-JACKET.

Specification of Letters Patent.

Patented Nov. '14., 1916.

Application filed May H, 1915. Serial No. 28,793.

To all whom it may concern:

Be it known that I, HENRY Robina citizen of the United States, residingat West Allis, in the county of Milwaukee and State of lVisconsin, haveinvented a certain new and useful Improvement in Water-Jackets, of whichthe following is a specification.

This invention relates to improvements in the construction of waterjackets for cupola,

provide a stay-bolt having one end welded to the inside or fire sheetand having its opposite free end passed through an opening in theoutside sheet and riveted to the outside sheet. It has also beenproposed to substitute for the riveted connection to the outside sheet,devices independent of the staybolt for securin the free end thereof tothe outside sheet. further development in the art of manufacturing thesewater jackets Was to weld both ends of the stay-bolt to the inside andoutside sheets, respectively. A still further development was to providealined openings through the'two sheets and to pass a stay-bolt throughthese openings riveting or otherwise fastening the end of the stayboltadjacent the outside sheet to that sheet,

and welding the opposite end to the inside sheet, the opening throughthe sheet adjacent the welded end ofthe stay-bolt being subsequentlyclosed by means of a welded plug.

It is now proposed, in order to avoid perforating the inside or firesheet, to weld or otherwise secure a boss to this sheet and todetachably secure the stay-bolt to the boss, the opposite end of thestay-bolt being secured to the outside sheet by any suitable means. Thisconstruction has the advan-' tage of maintaining the fire sheetimperforate at its portion adjacent the stay-bolt and also permits readyinsertion and removal of the stay-bolt.

A clear conception of several embodiments of the invention may be had byreferring to the drawing accompanying and forming a part of thisspecificationin which like reference characters designate the'same orsimilar parts in the various views.

Figure 1 is asection through a fragment of a water jacket showing oneform of staybolt. Fig. 2 is a transverse section through the stay-boltdisclosed in Fig. 1 showing a fragment of the fire sheet, the sectionbeing taken along the line Ill- 11 of Fig. 1 looking in thedirectio'n'ofthe arrow. F ig, 3 is a section through a fragment of 'a water jacketshowing another form of stay-bolt. Fig. 4 is a transverse sectionthrough the stay-bolt disclosed in Fig. 3 showing a fragment of the firesheet, the section being taken along the line IVIV of Fig; 3 looking inthe direction of the arrow. Fig. 5 is a section through a fragment ofaWater jacket showing a third form of stay-bolt. Fig. 6 is a transversesection through the stay-bolt disclosed in Fig. .5 showing a fragment ofthe fire sheet, the section being taken along the line VI-VI of Fig. 5looking in the direction of the arrow. Fig. 7 is a section through afragment of a water jacket showing still another form of stay-bolt. Fig.8 is a transverse section through the stay-bolt disclosed in Fig. 7showing a. fragment of the fire sheet, the section being taken along theline VIIIVIII of 7 looking in the direction of the arrow. Fig. 9 is asection through a fragmentof a Water jacket showing a fifth form ofstay-bolt. Fig. 10 is a transverse section through the stay-boltdisclosed in Fig. 9, showing a fragment of the fire sheet, thefsectionbeing taken along the line X X of Fig. 9 looking inthe direction of thearrow. j p

Waterjackets for cup ola, blast and similar furnaces usually comprise apair of spaced parallel sheets having the water chamber formed betweenthem. The inside or fire sheet 1 is ordinarily made of somewhat heaviermaterial than that used for the outside sheet 2. In order to preventcollapse of the jacket it is desirable to tie the two sheets 1, 2,firmly to each other at various portions of the jacket. For this purposesuitable stay-bolts are provided.

Referring specifically to Figs. 1 and 2, the inside or fire sheet 1 hasa square boss 4: secured thereto preferably by welding. The

. tion of the sheets 1. 2, is prevented.

boss 4 is formed with an interior pocket 18 having shoulders 19 thereinbetween which a slot 20 is formed. A stay-bolt 13 having a square head21 at one end thereof is inserted within the slot 20 with the head 21engaging the shoulders 19. A bushing 3 surrounds the stay-bolt 13 andhas its opposite ends abutting againstthe end surface of the boss 4 andthe inner surface of the outside sheet 2, respectively. The outer end ofthe stay-bolt 13 passes through an .0 3611111 in the outside sheet 2bein screwthreaded to receive a suitable clamping nut 11. An asbestoswasher 9, surrounds the stay-bolt 13 at a portion adjacent the openingin the outside sheet 2, and prevents leakage of water from within thejacket through the outside sheet. An ordinary washer 710 isplacedadjacent the asbestos washer, being clamped firmly against the washer 9by the nut 11. Vith this construction it will be observed that. thestay-bolt 13 is normally under tension, thereby preventing outwarddistortion of the water jacket, while the sleeve or bushing 3 isnormally under compression whereby inward dis iprstay-bolt 13 andbushing 3 may be readily removed by removing the nut 11 and washers 9,10, and shifting the headed end of the bolt along the slot 20 until thehead 21 is clear of the boss 4. Insertion of a bolt 13 is readilyaccomplished by reversing these steps.

Referring specifically to Figs. 3 and 4,'

the inside or fire sheet 1 has a square boss 5 secured thereto,preferably by welding. The

ner surface of the outside sheet 2. The reduced end of the stay-.bolt14beyond the shoulder 26 passes through an opening in the outside sheet 2and is screw-threaded to receive a suitable'clamping nut11. Arias bestoswasher 9 surrounds the stay-bolt 14 at a portion adjacent the opening inthe 'outside' sheet 2, and prevents leakage of waterfront withinthejacket through the outslde sheet,- An ordinary Washer 10 is placedadjacent the asbestos washer, being clamped firmly against the washer 9by the nut 11.

I l/Vith this construction it will be observed that the portion of thestay-bolt 14 between the head 25 and the screwthreaded endthereof isnormally under tension, thereby preventing outward distortion of thewater jacket, While the portion of the stay-bolt 14 between the shoulder26 and the headed end is normally under compression.

whereby inward distortion of the sheets 1, 2, is prevented. Thestay-bolt 14 may be readily removed by removing the nut 11 and Washers9, 10, and shifting the'headed end of the bolt along the slot 24 untilthe head 25 is clear of the boss 5. Insertion of the bolt 14 is readilyaccomplished by reversing these steps. 7

Referring specifically to Figs. 5 and 6,the inside or fire sheet 1 has acircular boss 6 secured thereto, preferably by welding. The boss 6 isformed with a screw-threaded socket within which a screw-threaded end ofthe stay-bolt 15 is normally inserted. A bushing 3 surrounds thestay-bolt 15 and has its opposite ends abutting against the end surfaceof the boss 6 and the inner surface of the outside sheet 2,respectively. The outer end of the stay-bolt 15 passes through anopening in'the outside sheet 2, being screw-threaded to receive asuitable clamping nut 11. An asbestos washer surrounds the stay-bolt 15at a portion adjacent the opening in the outside sheet 2 and preventsleakage of water 'fronrwithin the jacket through the outside sheet. Anordinary washer 10 is placed adjacent the asbestos washer, being clampedfirmly against the washer 9 by the nut 11. With this construction itwill be noted that the stay-bolt 15 is normally under tension to preventoutward distortion of the water jacket, while the sleeve or bushing 8 isnormally under compression whereby inward distortion of the sheets 1, 2,is prevented. The stay-bolt l5 and bushing 3 may be readily removed byunscrewing the end of the stay-bolt from the boss 6. Insertion of thebolt 15 may be readily accomplished by screwing the same into the socketwithin the boss 6 and applying the clamping nut 11 to the protruding endof the bolt.

Referring specifically to Figs. 7, 8, 9 and 10, the inside or fire sheet1 has a circular boss '7 secured thereto, preferably by welding. Theboss 7 in each case is provided with a screw-threaded socket adapted toreceive the screwthreaded end of a stay-bolt 16, 17. Each of thestay-bolts 16, 17, is provided with a shoulder 27, 28, which normallyengages the inner surface of the outside sheet 2. The stayebolt 16 is.provided with a screw-threaded reduced portion projecting beyond theshoulder 27 which passes through an opening in the outside sheet 2 andwhich is adapted to receive the clamping nut 11. An asbestos washer 9surrounds the staybolt 16 at a portion adjacent the opening in theoutside sheet 2 and prevents leakage of water from within a jacketthrough the out side sheet. An ordinary washer is placed adjacent to thev asbestos washer, being clamped firmly against the washer 9 by a nut11. With this construction it will be noted that the portion of the staybolt 16 between the threaded ends thereof, is normally under tension toprevent outward distortion of the water jacket, while the portion of thebolt 16 between the shoulder 27 and the end thereof Which engages theboss 7, is normally under compression whereby inward distortion of thesheets 1, 2, is prevented. The stay-bolt 16 may be removed by firstremoving the nut 11 and washer 9, 10, then distorting the outside sheetto clear the bolt and subsequently unscrewing the end of the stay-bolt16 which normally engages the boss 7.

The stay-bolt 17 has a reduced portion beyond the shoulder 28 thereof,which is passed through an opening in the outside sheet 2 and rivetedover to form a head 12. The stay-bolt 17 may be removed upon removal ofthe riveted head 12 and distortion of the outside sheet 2 to permitwithdrawal of the end of the stay-bolt 17 from the boss 7 It will benoted that in each of the several constructions of stay-bolts disclosed,the bolt may be readily applied without necessitating perforation of thefire sheet 1 adjacent the bolt, thereby eliminating possible leaksthrough the jacket on the heated side thereof. This feature is theresult of the use of the boss secured to the fire sheet, to Which thestay-bolt is secured. By providing removable clamping means adjacent theend of the stay-bolt which engages the outside sheet, the bolt may bereadily inserted in, and removed from the jacket.

It should be understood that it is not desired to be limited to theexact details of construction shown and described, for obviousmodifications within the scope of the appended claims will occur to aperson skilled in the art.

It is claimed and desired to secure by Let ters Patent,-

1. In combination, an inside sheet, an outside sheet, a boss secured toone of said sheets at an imperforate portion thereof, a stay-boltdetachably secured at one end to said boss only, and means for securingsaid stay-bolt to the other of said sheets.

2. In combination, an inside sheet, an outside sheet, a boss welded tosaid inside sheet at an imperforate portion thereof, a stayboltdetachably secured at one end to said boss only, and means for securingsaid staybolt to said outside sheet.

3. In combination, an inside sheet, an outside sheet, a boss secured tosaid inside sheet, a stay-bolt detachably secured at one end to saidboss only, and means for securing said stay-bolt to said outside sheet.

at. In combination, an inside sheet, an outside sheet, a boss secured toone of said sheets at a portion of said sheet which is imperforate andof uniform thickness, a stay-bolt detachably secured to said boss, andmeans for securing said stay-bolt to the other of said sheets.

5. In combination, an inside sheet, an outside sheet, a boss welded tosaid inside sheet, said inside sheet adjacent said boss beingimperforate and of uniform thickness, a staybolt detachably secured tosaid boss, and means for securing said stay-bolt to said outside sheet.

In testimony whereof the signature of the inventor is afiixed hereto.

' HENRY RUDE.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

Washington, D. C.

